Fluid circulating bed boiler with ultra -supercritical parameters.

摘要

A type of circulating fluid bed boiler of 1000MW ultra -supercritical parameters, including the threshold (1),The cyclone separator (2),And the vertical tube (3) connecting the exit from the solid phase of the cyclone separator and the threshold and material return device (4),The cyclone separator (2) is composed of the column section (21) of the top and cone section (22) of the bottom, the threshold (1) is surrounded by surrounding water cooling wall, including according to the direction of smoke flow, including the horizontal smoke channel (5) The smoke connection (6) smoke channel exit from the separator exit to the vertical tail well and the vertical tail well (7),The threshold (1) uses the simple threshold structure with several air distribution plates or ring soles with ring air distribution plates, among others, the amount of single threshold air distribution plates with several air distribution plates n = 2; o n the device The material return ratio, the height h proportion of the lower edge of the input material return from the threshold to the top of the furnace and the total height of the cyclone separator h /h = 2; the amount of cyclone separator may be no less than eight units,Including split into two groups and installed around the center of the threshold showing the configuration of central symmetry or the configuration of axial symmetry along the symmetrical axis of the threshold. The circulating fluid -bed boiler of ultra -supercritical 1000MW category parameters of various vapour and combustible parameters was carried out.